Merge pull request #4599 from wwylele/bitfield-endian
Common: make BitField endianness-aware
This commit is contained in:
commit
f78512d6de
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@ -126,29 +126,29 @@ struct SourceConfiguration {
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union {
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u32_le dirty_raw;
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BitField<0, 1, u32_le> format_dirty;
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BitField<1, 1, u32_le> mono_or_stereo_dirty;
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BitField<2, 1, u32_le> adpcm_coefficients_dirty;
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BitField<0, 1, u32> format_dirty;
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BitField<1, 1, u32> mono_or_stereo_dirty;
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BitField<2, 1, u32> adpcm_coefficients_dirty;
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/// Tends to be set when a looped buffer is queued.
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BitField<3, 1, u32_le> partial_embedded_buffer_dirty;
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BitField<4, 1, u32_le> partial_reset_flag;
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BitField<3, 1, u32> partial_embedded_buffer_dirty;
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BitField<4, 1, u32> partial_reset_flag;
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BitField<16, 1, u32_le> enable_dirty;
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BitField<17, 1, u32_le> interpolation_dirty;
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BitField<18, 1, u32_le> rate_multiplier_dirty;
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BitField<19, 1, u32_le> buffer_queue_dirty;
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BitField<20, 1, u32_le> loop_related_dirty;
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BitField<16, 1, u32> enable_dirty;
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BitField<17, 1, u32> interpolation_dirty;
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BitField<18, 1, u32> rate_multiplier_dirty;
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BitField<19, 1, u32> buffer_queue_dirty;
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BitField<20, 1, u32> loop_related_dirty;
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/// Tends to also be set when embedded buffer is updated.
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BitField<21, 1, u32_le> play_position_dirty;
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BitField<22, 1, u32_le> filters_enabled_dirty;
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BitField<23, 1, u32_le> simple_filter_dirty;
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BitField<24, 1, u32_le> biquad_filter_dirty;
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BitField<25, 1, u32_le> gain_0_dirty;
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BitField<26, 1, u32_le> gain_1_dirty;
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BitField<27, 1, u32_le> gain_2_dirty;
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BitField<28, 1, u32_le> sync_dirty;
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BitField<29, 1, u32_le> reset_flag;
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BitField<30, 1, u32_le> embedded_buffer_dirty;
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BitField<21, 1, u32> play_position_dirty;
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BitField<22, 1, u32> filters_enabled_dirty;
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BitField<23, 1, u32> simple_filter_dirty;
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BitField<24, 1, u32> biquad_filter_dirty;
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BitField<25, 1, u32> gain_0_dirty;
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BitField<26, 1, u32> gain_1_dirty;
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BitField<27, 1, u32> gain_2_dirty;
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BitField<28, 1, u32> sync_dirty;
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BitField<29, 1, u32> reset_flag;
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BitField<30, 1, u32> embedded_buffer_dirty;
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};
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// Gain control
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@ -206,8 +206,8 @@ struct SourceConfiguration {
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union {
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u16_le filters_enabled;
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BitField<0, 1, u16_le> simple_filter_enabled;
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BitField<1, 1, u16_le> biquad_filter_enabled;
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BitField<0, 1, u16> simple_filter_enabled;
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BitField<1, 1, u16> biquad_filter_enabled;
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};
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SimpleFilter simple_filter;
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@ -227,8 +227,8 @@ struct SourceConfiguration {
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/// ADPCM Predictor (4 bits) and Scale (4 bits)
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union {
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u16_le adpcm_ps;
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BitField<0, 4, u16_le> adpcm_scale;
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BitField<4, 4, u16_le> adpcm_predictor;
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BitField<0, 4, u16> adpcm_scale;
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BitField<4, 4, u16> adpcm_predictor;
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};
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/// ADPCM Historical Samples (y[n-1] and y[n-2])
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@ -285,14 +285,14 @@ struct SourceConfiguration {
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u16_le flags1_raw;
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BitField<0, 2, MonoOrStereo> mono_or_stereo;
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BitField<2, 2, Format> format;
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BitField<5, 1, u16_le> fade_in;
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BitField<5, 1, u16> fade_in;
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};
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/// ADPCM Predictor (4 bit) and Scale (4 bit)
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union {
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u16_le adpcm_ps;
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BitField<0, 4, u16_le> adpcm_scale;
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BitField<4, 4, u16_le> adpcm_predictor;
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BitField<0, 4, u16> adpcm_scale;
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BitField<4, 4, u16> adpcm_predictor;
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};
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/// ADPCM Historical Samples (y[n-1] and y[n-2])
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@ -300,8 +300,8 @@ struct SourceConfiguration {
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union {
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u16_le flags2_raw;
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BitField<0, 1, u16_le> adpcm_dirty; ///< Has the ADPCM info above been changed?
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BitField<1, 1, u16_le> is_looping; ///< Is this a looping buffer?
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BitField<0, 1, u16> adpcm_dirty; ///< Has the ADPCM info above been changed?
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BitField<1, 1, u16> is_looping; ///< Is this a looping buffer?
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};
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/// Buffer id of embedded buffer (used as a buffer id in SourceStatus to reference this
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@ -334,20 +334,20 @@ struct DspConfiguration {
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union {
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u32_le dirty_raw;
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BitField<8, 1, u32_le> mixer1_enabled_dirty;
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BitField<9, 1, u32_le> mixer2_enabled_dirty;
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BitField<10, 1, u32_le> delay_effect_0_dirty;
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BitField<11, 1, u32_le> delay_effect_1_dirty;
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BitField<12, 1, u32_le> reverb_effect_0_dirty;
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BitField<13, 1, u32_le> reverb_effect_1_dirty;
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BitField<8, 1, u32> mixer1_enabled_dirty;
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BitField<9, 1, u32> mixer2_enabled_dirty;
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BitField<10, 1, u32> delay_effect_0_dirty;
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BitField<11, 1, u32> delay_effect_1_dirty;
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BitField<12, 1, u32> reverb_effect_0_dirty;
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BitField<13, 1, u32> reverb_effect_1_dirty;
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BitField<16, 1, u32_le> volume_0_dirty;
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BitField<16, 1, u32> volume_0_dirty;
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BitField<24, 1, u32_le> volume_1_dirty;
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BitField<25, 1, u32_le> volume_2_dirty;
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BitField<26, 1, u32_le> output_format_dirty;
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BitField<27, 1, u32_le> limiter_enabled_dirty;
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BitField<28, 1, u32_le> headphones_connected_dirty;
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BitField<24, 1, u32> volume_1_dirty;
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BitField<25, 1, u32> volume_2_dirty;
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BitField<26, 1, u32> output_format_dirty;
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BitField<27, 1, u32> limiter_enabled_dirty;
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BitField<28, 1, u32> headphones_connected_dirty;
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};
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/// The DSP has three intermediate audio mixers. This controls the volume level (0.0-1.0) for
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@ -384,9 +384,9 @@ struct DspConfiguration {
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/// The DSP clears these each audio frame.
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union {
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u16_le dirty_raw;
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BitField<0, 1, u16_le> enable_dirty;
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BitField<1, 1, u16_le> work_buffer_address_dirty;
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BitField<2, 1, u16_le> other_dirty; ///< Set when anything else has been changed
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BitField<0, 1, u16> enable_dirty;
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BitField<1, 1, u16> work_buffer_address_dirty;
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BitField<2, 1, u16> other_dirty; ///< Set when anything else has been changed
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};
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u16_le enable;
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@ -34,6 +34,7 @@
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#include <limits>
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#include <type_traits>
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#include "common/common_funcs.h"
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#include "common/swap.h"
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/*
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* Abstract bitfield class
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@ -108,7 +109,7 @@
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* symptoms.
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*/
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#pragma pack(1)
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template <std::size_t Position, std::size_t Bits, typename T>
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template <std::size_t Position, std::size_t Bits, typename T, typename EndianTag = LETag>
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struct BitField {
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private:
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// UnderlyingType is T for non-enum types and the underlying type of T if
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@ -121,6 +122,8 @@ private:
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// We store the value as the unsigned type to avoid undefined behaviour on value shifting
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using StorageType = std::make_unsigned_t<UnderlyingType>;
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using StorageTypeWithEndian = typename AddEndian<StorageType, EndianTag>::type;
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public:
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BitField& operator=(const BitField&) = default;
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@ -168,7 +171,7 @@ public:
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}
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FORCE_INLINE void Assign(const T& value) {
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storage = (storage & ~mask) | FormatValue(value);
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storage = (static_cast<StorageType>(storage) & ~mask) | FormatValue(value);
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}
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FORCE_INLINE T Value() const {
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@ -180,7 +183,7 @@ public:
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}
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private:
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StorageType storage;
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StorageTypeWithEndian storage;
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static_assert(bits + position <= 8 * sizeof(T), "Bitfield out of range");
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@ -196,3 +199,6 @@ private:
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static_assert(std::is_trivially_copyable<BitField<0, 1, unsigned>>::value,
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"BitField must be trivially copyable");
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#endif
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template <std::size_t Position, std::size_t Bits, typename T>
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using BitFieldBE = BitField<Position, Bits, T, BETag>;
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@ -172,7 +172,7 @@ struct swap_struct_t {
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using swapped_t = swap_struct_t;
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protected:
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T value = T();
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T value;
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static T swap(T v) {
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return F::swap(v);
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@ -645,64 +645,116 @@ protected:
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}
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};
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struct SwapTag {}; // Use the different endianness from the system
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struct KeepTag {}; // Use the same endianness as the system
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template <typename T, typename Tag>
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struct AddEndian;
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// KeepTag specializations
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template <typename T>
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struct AddEndian<T, KeepTag> {
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using type = T;
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};
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// SwapTag specializations
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template <>
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struct AddEndian<u8, SwapTag> {
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using type = u8;
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};
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template <>
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struct AddEndian<u16, SwapTag> {
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using type = swap_struct_t<u16, swap_16_t<u16>>;
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};
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template <>
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struct AddEndian<u32, SwapTag> {
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using type = swap_struct_t<u32, swap_32_t<u32>>;
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};
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template <>
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struct AddEndian<u64, SwapTag> {
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using type = swap_struct_t<u64, swap_64_t<u64>>;
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};
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template <>
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struct AddEndian<s8, SwapTag> {
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using type = s8;
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};
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template <>
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struct AddEndian<s16, SwapTag> {
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using type = swap_struct_t<s16, swap_16_t<s16>>;
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};
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template <>
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struct AddEndian<s32, SwapTag> {
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using type = swap_struct_t<s32, swap_32_t<s32>>;
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};
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template <>
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struct AddEndian<s64, SwapTag> {
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using type = swap_struct_t<s64, swap_64_t<s64>>;
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};
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template <>
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struct AddEndian<float, SwapTag> {
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using type = swap_struct_t<float, swap_float_t<float>>;
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};
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template <>
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struct AddEndian<double, SwapTag> {
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using type = swap_struct_t<double, swap_double_t<double>>;
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};
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template <typename T>
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struct AddEndian<T, SwapTag> {
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static_assert(std::is_enum_v<T>);
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using type = swap_enum_t<T>;
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};
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// Alias LETag/BETag as KeepTag/SwapTag depending on the system
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#if COMMON_LITTLE_ENDIAN
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using u16_le = u16;
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using u32_le = u32;
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using u64_le = u64;
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using s16_le = s16;
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using s32_le = s32;
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using s64_le = s64;
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using LETag = KeepTag;
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using BETag = SwapTag;
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template <typename T>
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using enum_le = std::enable_if_t<std::is_enum_v<T>, T>;
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using float_le = float;
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using double_le = double;
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using u64_be = swap_struct_t<u64, swap_64_t<u64>>;
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using s64_be = swap_struct_t<s64, swap_64_t<s64>>;
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using u32_be = swap_struct_t<u32, swap_32_t<u32>>;
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using s32_be = swap_struct_t<s32, swap_32_t<s32>>;
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using u16_be = swap_struct_t<u16, swap_16_t<u16>>;
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using s16_be = swap_struct_t<s16, swap_16_t<s16>>;
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template <typename T>
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using enum_be = swap_enum_t<T>;
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using float_be = swap_struct_t<float, swap_float_t<float>>;
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using double_be = swap_struct_t<double, swap_double_t<double>>;
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#else
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using u64_le = swap_struct_t<u64, swap_64_t<u64>>;
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using s64_le = swap_struct_t<s64, swap_64_t<s64>>;
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using u32_le = swap_struct_t<u32, swap_32_t<u32>>;
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using s32_le = swap_struct_t<s32, swap_32_t<s32>>;
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using u16_le = swap_struct_t<u16, swap_16_t<u16>>;
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using s16_le = swap_struct_t<s16, swap_16_t<s16>>;
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template <typename T>
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using enum_le = swap_enum_t<T>;
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using float_le = swap_struct_t<float, swap_float_t<float>>;
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using double_le = swap_struct_t<double, swap_double_t<double>>;
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using u16_be = u16;
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using u32_be = u32;
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using u64_be = u64;
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using s16_be = s16;
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using s32_be = s32;
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using s64_be = s64;
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template <typename T>
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using enum_be = std::enable_if_t<std::is_enum_v<T>, T>;
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using float_be = float;
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using double_be = double;
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using BETag = KeepTag;
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using LETag = SwapTag;
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#endif
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// Aliases for LE types
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using u16_le = AddEndian<u16, LETag>::type;
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using u32_le = AddEndian<u32, LETag>::type;
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using u64_le = AddEndian<u64, LETag>::type;
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using s16_le = AddEndian<s16, LETag>::type;
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using s32_le = AddEndian<s32, LETag>::type;
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using s64_le = AddEndian<s64, LETag>::type;
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template <typename T>
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using enum_le = std::enable_if_t<std::is_enum_v<T>, typename AddEndian<T, LETag>::type>;
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using float_le = AddEndian<float, LETag>::type;
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using double_le = AddEndian<double, LETag>::type;
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// Aliases for BE types
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using u16_be = AddEndian<u16, BETag>::type;
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using u32_be = AddEndian<u32, BETag>::type;
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using u64_be = AddEndian<u64, BETag>::type;
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using s16_be = AddEndian<s16, BETag>::type;
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using s32_be = AddEndian<s32, BETag>::type;
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using s64_be = AddEndian<s64, BETag>::type;
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template <typename T>
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using enum_be = std::enable_if_t<std::is_enum_v<T>, typename AddEndian<T, BETag>::type>;
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using float_be = AddEndian<float, BETag>::type;
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using double_be = AddEndian<double, BETag>::type;
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@ -129,18 +129,18 @@ struct ExHeader_StorageInfo {
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u64_le ext_save_data_id;
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// When using extended savedata access
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// Prefer the ID specified in the most significant bits
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BitField<40, 20, u64_le> extdata_id3;
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BitField<20, 20, u64_le> extdata_id4;
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BitField<0, 20, u64_le> extdata_id5;
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BitField<40, 20, u64> extdata_id3;
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BitField<20, 20, u64> extdata_id4;
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BitField<0, 20, u64> extdata_id5;
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};
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u8 system_save_data_id[8];
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union {
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u64_le storage_accessible_unique_ids;
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// When using extended savedata access
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// Prefer the ID specified in the most significant bits
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BitField<40, 20, u64_le> extdata_id0;
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BitField<20, 20, u64_le> extdata_id1;
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BitField<0, 20, u64_le> extdata_id2;
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BitField<40, 20, u64> extdata_id0;
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BitField<20, 20, u64> extdata_id1;
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BitField<0, 20, u64> extdata_id2;
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};
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u8 access_info[7];
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u8 other_attributes;
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@ -19,9 +19,9 @@ namespace Service::IR {
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struct ExtraHIDResponse {
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union {
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BitField<0, 8, u32_le> header;
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BitField<8, 12, u32_le> c_stick_x;
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BitField<20, 12, u32_le> c_stick_y;
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BitField<0, 8, u32> header;
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BitField<8, 12, u32> c_stick_x;
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BitField<20, 12, u32> c_stick_y;
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} c_stick;
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union {
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BitField<0, 5, u8> battery_level;
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@ -27,13 +27,13 @@ namespace Service::IR {
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union PadState {
|
||||
u32_le hex{};
|
||||
|
||||
BitField<14, 1, u32_le> zl;
|
||||
BitField<15, 1, u32_le> zr;
|
||||
BitField<14, 1, u32> zl;
|
||||
BitField<15, 1, u32> zr;
|
||||
|
||||
BitField<24, 1, u32_le> c_stick_right;
|
||||
BitField<25, 1, u32_le> c_stick_left;
|
||||
BitField<26, 1, u32_le> c_stick_up;
|
||||
BitField<27, 1, u32_le> c_stick_down;
|
||||
BitField<24, 1, u32> c_stick_right;
|
||||
BitField<25, 1, u32> c_stick_left;
|
||||
BitField<26, 1, u32> c_stick_up;
|
||||
BitField<27, 1, u32> c_stick_down;
|
||||
};
|
||||
|
||||
/// Interface to "ir:rst" service
|
||||
|
|
|
@ -231,8 +231,8 @@ private:
|
|||
*/
|
||||
union SegmentTag {
|
||||
u32_le raw;
|
||||
BitField<0, 4, u32_le> segment_index;
|
||||
BitField<4, 28, u32_le> offset_into_segment;
|
||||
BitField<0, 4, u32> segment_index;
|
||||
BitField<4, 28, u32> offset_into_segment;
|
||||
|
||||
SegmentTag() = default;
|
||||
explicit SegmentTag(u32 raw_) : raw(raw_) {}
|
||||
|
@ -270,8 +270,8 @@ private:
|
|||
u16_le test_bit; // bit address into the name to test
|
||||
union Child {
|
||||
u16_le raw;
|
||||
BitField<0, 15, u16_le> next_index;
|
||||
BitField<15, 1, u16_le> is_end;
|
||||
BitField<0, 15, u16> next_index;
|
||||
BitField<15, 1, u16> is_end;
|
||||
} left, right;
|
||||
u16_le export_table_index; // index of an ExportNamedSymbolEntry
|
||||
|
||||
|
|
|
@ -45,20 +45,20 @@ struct ControllerState {
|
|||
union {
|
||||
u16_le hex;
|
||||
|
||||
BitField<0, 1, u16_le> a;
|
||||
BitField<1, 1, u16_le> b;
|
||||
BitField<2, 1, u16_le> select;
|
||||
BitField<3, 1, u16_le> start;
|
||||
BitField<4, 1, u16_le> right;
|
||||
BitField<5, 1, u16_le> left;
|
||||
BitField<6, 1, u16_le> up;
|
||||
BitField<7, 1, u16_le> down;
|
||||
BitField<8, 1, u16_le> r;
|
||||
BitField<9, 1, u16_le> l;
|
||||
BitField<10, 1, u16_le> x;
|
||||
BitField<11, 1, u16_le> y;
|
||||
BitField<12, 1, u16_le> debug;
|
||||
BitField<13, 1, u16_le> gpio14;
|
||||
BitField<0, 1, u16> a;
|
||||
BitField<1, 1, u16> b;
|
||||
BitField<2, 1, u16> select;
|
||||
BitField<3, 1, u16> start;
|
||||
BitField<4, 1, u16> right;
|
||||
BitField<5, 1, u16> left;
|
||||
BitField<6, 1, u16> up;
|
||||
BitField<7, 1, u16> down;
|
||||
BitField<8, 1, u16> r;
|
||||
BitField<9, 1, u16> l;
|
||||
BitField<10, 1, u16> x;
|
||||
BitField<11, 1, u16> y;
|
||||
BitField<12, 1, u16> debug;
|
||||
BitField<13, 1, u16> gpio14;
|
||||
// Bits 14-15 are currently unused
|
||||
};
|
||||
s16_le circle_pad_x;
|
||||
|
@ -96,12 +96,12 @@ struct ControllerState {
|
|||
union {
|
||||
u32_le hex;
|
||||
|
||||
BitField<0, 5, u32_le> battery_level;
|
||||
BitField<5, 1, u32_le> zl_not_held;
|
||||
BitField<6, 1, u32_le> zr_not_held;
|
||||
BitField<7, 1, u32_le> r_not_held;
|
||||
BitField<8, 12, u32_le> c_stick_x;
|
||||
BitField<20, 12, u32_le> c_stick_y;
|
||||
BitField<0, 5, u32> battery_level;
|
||||
BitField<5, 1, u32> zl_not_held;
|
||||
BitField<6, 1, u32> zr_not_held;
|
||||
BitField<7, 1, u32> r_not_held;
|
||||
BitField<8, 12, u32> c_stick_x;
|
||||
BitField<20, 12, u32> c_stick_y;
|
||||
};
|
||||
} extra_hid_response;
|
||||
};
|
||||
|
|
|
@ -141,22 +141,22 @@ struct PadData {
|
|||
// The following union isn't trivially copyable but we don't use this input anyway.
|
||||
// union DigitalButton {
|
||||
// u16_le button;
|
||||
// BitField<0, 1, u16_le> button_1; // Share
|
||||
// BitField<1, 1, u16_le> button_2; // L3
|
||||
// BitField<2, 1, u16_le> button_3; // R3
|
||||
// BitField<3, 1, u16_le> button_4; // Options
|
||||
// BitField<4, 1, u16_le> button_5; // Up
|
||||
// BitField<5, 1, u16_le> button_6; // Right
|
||||
// BitField<6, 1, u16_le> button_7; // Down
|
||||
// BitField<7, 1, u16_le> button_8; // Left
|
||||
// BitField<8, 1, u16_le> button_9; // L2
|
||||
// BitField<9, 1, u16_le> button_10; // R2
|
||||
// BitField<10, 1, u16_le> button_11; // L1
|
||||
// BitField<11, 1, u16_le> button_12; // R1
|
||||
// BitField<12, 1, u16_le> button_13; // Triangle
|
||||
// BitField<13, 1, u16_le> button_14; // Circle
|
||||
// BitField<14, 1, u16_le> button_15; // Cross
|
||||
// BitField<15, 1, u16_le> button_16; // Square
|
||||
// BitField<0, 1, u16> button_1; // Share
|
||||
// BitField<1, 1, u16> button_2; // L3
|
||||
// BitField<2, 1, u16> button_3; // R3
|
||||
// BitField<3, 1, u16> button_4; // Options
|
||||
// BitField<4, 1, u16> button_5; // Up
|
||||
// BitField<5, 1, u16> button_6; // Right
|
||||
// BitField<6, 1, u16> button_7; // Down
|
||||
// BitField<7, 1, u16> button_8; // Left
|
||||
// BitField<8, 1, u16> button_9; // L2
|
||||
// BitField<9, 1, u16> button_10; // R2
|
||||
// BitField<10, 1, u16> button_11; // L1
|
||||
// BitField<11, 1, u16> button_12; // R1
|
||||
// BitField<12, 1, u16> button_13; // Triangle
|
||||
// BitField<13, 1, u16> button_14; // Circle
|
||||
// BitField<14, 1, u16> button_15; // Cross
|
||||
// BitField<15, 1, u16> button_16; // Square
|
||||
// } digital_button;
|
||||
|
||||
u8 home;
|
||||
|
|
|
@ -1,4 +1,5 @@
|
|||
add_executable(tests
|
||||
common/bit_field.cpp
|
||||
common/param_package.cpp
|
||||
core/arm/arm_test_common.cpp
|
||||
core/arm/arm_test_common.h
|
||||
|
|
|
@ -0,0 +1,90 @@
|
|||
// Copyright 2019 Citra Emulator Project
|
||||
// Licensed under GPLv2 or any later version
|
||||
// Refer to the license.txt file included.
|
||||
|
||||
#include <array>
|
||||
#include <cstring>
|
||||
#include <type_traits>
|
||||
#include <catch2/catch.hpp>
|
||||
#include "common/bit_field.h"
|
||||
|
||||
TEST_CASE("BitField", "[common]") {
|
||||
enum class TestEnum : u32 {
|
||||
A = 0b10111101,
|
||||
B = 0b10101110,
|
||||
C = 0b00001111,
|
||||
};
|
||||
|
||||
union LEBitField {
|
||||
u32_le raw;
|
||||
BitField<0, 6, u32> a;
|
||||
BitField<6, 4, s32> b;
|
||||
BitField<10, 8, TestEnum> c;
|
||||
BitField<18, 14, u32> d;
|
||||
} le_bitfield;
|
||||
|
||||
union BEBitField {
|
||||
u32_be raw;
|
||||
BitFieldBE<0, 6, u32> a;
|
||||
BitFieldBE<6, 4, s32> b;
|
||||
BitFieldBE<10, 8, TestEnum> c;
|
||||
BitFieldBE<18, 14, u32> d;
|
||||
} be_bitfield;
|
||||
|
||||
static_assert(sizeof(LEBitField) == sizeof(u32));
|
||||
static_assert(sizeof(BEBitField) == sizeof(u32));
|
||||
static_assert(std::is_trivially_copyable_v<LEBitField>);
|
||||
static_assert(std::is_trivially_copyable_v<BEBitField>);
|
||||
|
||||
std::array<u8, 4> raw{{
|
||||
0b01101100,
|
||||
0b11110110,
|
||||
0b10111010,
|
||||
0b11101100,
|
||||
}};
|
||||
|
||||
std::memcpy(&le_bitfield, &raw, sizeof(raw));
|
||||
std::memcpy(&be_bitfield, &raw, sizeof(raw));
|
||||
|
||||
// bit fields: 11101100101110'10111101'1001'101100
|
||||
REQUIRE(le_bitfield.raw == 0b11101100'10111010'11110110'01101100);
|
||||
REQUIRE(le_bitfield.a == 0b101100);
|
||||
REQUIRE(le_bitfield.b == -7); // 1001 as two's complement
|
||||
REQUIRE(le_bitfield.c == TestEnum::A);
|
||||
REQUIRE(le_bitfield.d == 0b11101100101110);
|
||||
|
||||
le_bitfield.a.Assign(0b000111);
|
||||
le_bitfield.b.Assign(-1);
|
||||
le_bitfield.c.Assign(TestEnum::C);
|
||||
le_bitfield.d.Assign(0b01010101010101);
|
||||
std::memcpy(&raw, &le_bitfield, sizeof(raw));
|
||||
// bit fields: 01010101010101'00001111'1111'000111
|
||||
REQUIRE(le_bitfield.raw == 0b01010101'01010100'00111111'11000111);
|
||||
REQUIRE(raw == std::array<u8, 4>{{
|
||||
0b11000111,
|
||||
0b00111111,
|
||||
0b01010100,
|
||||
0b01010101,
|
||||
}});
|
||||
|
||||
// bit fields: 01101100111101'10101110'1011'101100
|
||||
REQUIRE(be_bitfield.raw == 0b01101100'11110110'10111010'11101100);
|
||||
REQUIRE(be_bitfield.a == 0b101100);
|
||||
REQUIRE(be_bitfield.b == -5); // 1011 as two's complement
|
||||
REQUIRE(be_bitfield.c == TestEnum::B);
|
||||
REQUIRE(be_bitfield.d == 0b01101100111101);
|
||||
|
||||
be_bitfield.a.Assign(0b000111);
|
||||
be_bitfield.b.Assign(-1);
|
||||
be_bitfield.c.Assign(TestEnum::C);
|
||||
be_bitfield.d.Assign(0b01010101010101);
|
||||
std::memcpy(&raw, &be_bitfield, sizeof(raw));
|
||||
// bit fields: 01010101010101'00001111'1111'000111
|
||||
REQUIRE(be_bitfield.raw == 0b01010101'01010100'00111111'11000111);
|
||||
REQUIRE(raw == std::array<u8, 4>{{
|
||||
0b01010101,
|
||||
0b01010100,
|
||||
0b00111111,
|
||||
0b11000111,
|
||||
}});
|
||||
}
|
Reference in New Issue